A Research on Different Channel Modem in TWSTFT

Author

Zhang Hong ; Li Huanxin

Author_Institution

Nat. Time Service Center, CAS, Xi´an, China

fYear

2010

fDate

23-25 Sept. 2010

Firstpage

1

Lastpage

3

Abstract

Modem is the important equipment in two way satellite time and frequency transfer (TWSTFT, short for TW). It takes the role of modulating and demodulating the one pulse per second (1PPS). With the using of the multi-channel technology in TWSTFT, multi-channel modem is carried on. The multi-channel modem concerned in this paper is NICT modem while the single channel modem is the TWT-100. In this paper, the performance of Single channel Modem and Multi-channel is evaluated by time difference and the standard deviation between NTSC and NICT via TWSTFT. TWT-100 modem and NICT modem both have their advantages and disadvantages. But the performance of NICT modem is better than TWT-100 modem.

Keywords

demodulation; modems; telecommunication channels; NICT modem; TWSTFT; TWT-100 modem; demodulation; multichannel modem; multichannel technology; one-pulse-per-second; single channel modem; standard deviation; time difference; two way satellite time and frequency transfer; Clocks; Earth; Extraterrestrial measurements; Modems; Root mean square; Satellites; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-3708-5

Electronic_ISBN

978-1-4244-3709-2

Type

conf

DOI

10.1109/WICOM.2010.5600923

Filename

5600923